(An older customer and his wife approach the register.)

Me: “Hello! How are you today?”

Customer: “Good. How are you?”

Me: “Oh, I’m pretty good!”

Customer: “You got the ‘pretty’ part right, but I’m not so sure about the ‘good’ part yet.”

(The customer’s wife glares at him. I feel pretty uncomfortable and start to scan his groceries.)

Customer: “Hmm…you’re pretty fast. Good, good…”

(I hurriedly scan the rest of their groceries and turn my attention elsewhere.)